<?php 
/**
 * Funcion para el manejo de xml 
 */
// ------------------------------------------------------------------------

/**
* xml2array
* Devuelve un array con la estructura de un xml dado
* 
* @author n/n
* @example $array =  xml2array(file_get_contents('feed.xml', 1, 'attribute'));
* @see
* @link {http://www.bin-co.com/php/scripts/xml2array/}
* @since 
* @version none
* @access	public
* @param $get_attributes  1/0 Si es uno devuelve los atributos
* @return	Array (xml parseado)
*/
if ( ! function_exists('xml2array'))
	{
	function xml2array($contents, $get_attributes=1, $priority = 'tag'){ 
	    if(!$contents) return array(); 
	
	    if(!function_exists('xml_parser_create')) { 
	        //print "'xml_parser_create()' function not found!"; 
	        return array(); 
	    } 
	
	    //Get the XML parser of PHP - PHP must have this module for the parser to work 
	    $parser = xml_parser_create(''); 
	    xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8"); # http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss 
	    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0); 
	    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1); 
	    xml_parse_into_struct($parser, trim($contents), $xml_values); 
	    xml_parser_free($parser); 
	
	    if(!$xml_values) return;//Hmm... 
	
	    //Initializations 
	    $xml_array = array(); 
	    $parents = array(); 
	    $opened_tags = array(); 
	    $arr = array(); 
	
	    $current = &$xml_array; //Refference 
	
	    //Go through the tags. 
	    $repeated_tag_index = array();//Multiple tags with same name will be turned into an array 
	    foreach($xml_values as $data) { 
	        unset($attributes,$value);//Remove existing values, or there will be trouble 
	
	        //This command will extract these variables into the foreach scope 
	        // tag(string), type(string), level(int), attributes(array). 
	        extract($data);//We could use the array by itself, but this cooler. 
	
	        $result = array(); 
	        $attributes_data = array(); 
	         
	        if(isset($value)) { 
	            if($priority == 'tag') $result = $value; 
	            else $result['value'] = $value; //Put the value in a assoc array if we are in the 'Attribute' mode 
	        } 
	
	        //Set the attributes too. 
	        if(isset($attributes) and $get_attributes) { 
	            foreach($attributes as $attr => $val) { 
	                if($priority == 'tag') $attributes_data[$attr] = $val; 
	                else $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr' 
	            } 
	        } 
	
	        //See tag status and do the needed. 
	        if($type == "open") {//The starting of the tag '<tag>' 
	            $parent[$level-1] = &$current; 
	            if(!is_array($current) or (!in_array($tag, array_keys($current)))) { //Insert New tag 
	                $current[$tag] = $result; 
	                if($attributes_data) $current[$tag. '_attr'] = $attributes_data; 
	                $repeated_tag_index[$tag.'_'.$level] = 1; 
	
	                $current = &$current[$tag]; 
	
	            } else { //There was another element with the same tag name 
	
	                if(isset($current[$tag][0])) {//If there is a 0th element it is already an array 
	                    $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result; 
	                    $repeated_tag_index[$tag.'_'.$level]++; 
	                } else {//This section will make the value an array if multiple tags with the same name appear together 
	                    $current[$tag] = array($current[$tag],$result);//This will combine the existing item and the new item together to make an array 
	                    $repeated_tag_index[$tag.'_'.$level] = 2; 
	                     
	                    if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well 
	                        $current[$tag]['0_attr'] = $current[$tag.'_attr']; 
	                        unset($current[$tag.'_attr']); 
	                    } 
	
	                } 
	                $last_item_index = $repeated_tag_index[$tag.'_'.$level]-1; 
	                $current = &$current[$tag][$last_item_index]; 
	            } 
	
	        } elseif($type == "complete") { //Tags that ends in 1 line '<tag />' 
	            //See if the key is already taken. 
	            if(!isset($current[$tag])) { //New Key 
	                $current[$tag] = $result; 
	                $repeated_tag_index[$tag.'_'.$level] = 1; 
	                if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data; 
	
	            } else { //If taken, put all things inside a list(array) 
	                if(isset($current[$tag][0]) and is_array($current[$tag])) {//If it is already an array... 
	
	                    // ...push the new element into that array. 
	                    $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result; 
	                     
	                    if($priority == 'tag' and $get_attributes and $attributes_data) { 
	                        $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data; 
	                    } 
	                    $repeated_tag_index[$tag.'_'.$level]++; 
	
	                } else { //If it is not an array... 
	                    $current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value 
	                    $repeated_tag_index[$tag.'_'.$level] = 1; 
	                    if($priority == 'tag' and $get_attributes) { 
	                        if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well 
	                             
	                            $current[$tag]['0_attr'] = $current[$tag.'_attr']; 
	                            unset($current[$tag.'_attr']); 
	                        } 
	                         
	                        if($attributes_data) { 
	                            $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data; 
	                        } 
	                    } 
	                    $repeated_tag_index[$tag.'_'.$level]++; //0 and 1 index is already taken 
	                } 
	            } 
	
	        } elseif($type == 'close') { //End of tag '</tag>' 
	            $current = &$parent[$level-1]; 
	        } 
	    } 
	     
	    return($xml_array); 
	}
}
//---------------------------------------------------
?>